Twitch login + spring boot social security = Twitch has no control over the content or security of http://localhost:8080 error

API
4

Are you sure?

Your URI above says your redirect is

http://localhost:8080/login/oauth2/code/twitch

I would guess you have

http://localhost:8080/login/oauth2/code/twitch/

In the console.

I’d do a spot test but you redacted your public clientID.

The continue button will (generally) redirect to the first URL in your redirect list if it’s invalid.
If it’s not that then you need to query the ?error in the query string parameters